An inductively coupled plasma mass spectrometer sample introduction device

Abstract

The application belongs to the technical field of sample delivery devices, and discloses an inductively coupled plasma mass spectrometer sample delivery device, which comprises a hollow protection box, the bottom surface of the protection box is provided with a placing groove, the two ends of the placing groove are respectively provided with a first clamping rod and a second clamping rod in a sliding mode, the upper surface of the protection box is provided with a pull handle, the two opposite inner walls of the protection box are both provided with a rotating groove, the inner top wall of the pull handle is provided with a driving groove, and the protection box is provided with a driving assembly for driving the first clamping rod and the second clamping rod. The application has the effect of reducing the difficulty of clamping a sample tube for a worker.

Description

Technical Field

[0001] This utility model relates to the field of sample delivery device technology, and in particular to a sample delivery device for an inductively coupled plasma mass spectrometer. Background Technology

[0002] Inductively coupled plasma mass spectrometry (ICP-MS) is an inorganic mass spectrometer used for trace element and isotope ratio analysis, widely applied in geology, environment, food, medicine, and materials science. The instrument consists of core components such as a plasma generator, nebulizer, and quadrupole mass spectrometer. It uses a 27.12MHz radio frequency source to maintain a high-temperature ionization environment of the plasma, combined with a quadrupole mass analyzer to achieve elemental separation. During use, operators need to extract the sample, store it inside a sample tube, and then place the sample tube into the ICP-MS for analysis. In practice, because the sample solution is often corrosive, operators usually use a sample delivery device to hold and move the sample tube to reduce the probability of hand injury.

[0003] Chinese utility model patent CN215493311U discloses a sample delivery device for an inductively coupled plasma mass spectrometer (ICP-MS) for wastewater detection. The device includes a fixed plate with a support plate fixedly mounted on its bottom. A sample delivery clamping mechanism, comprising a connecting shaft, is located on one side of the fixed plate. This utility model utilizes a connecting shaft, gears, a first rack, a second rack, a first right-angle rod, a second right-angle rod, and arc-shaped clamping hands. When delivering or retrieving a sample tube, the sample tube is positioned between the two arc-shaped clamping hands. The operator rotates the connecting shaft counterclockwise, causing the gears to rotate counterclockwise. This causes the first and second racks to slide in opposite directions, and the two arc-shaped clamping hands move closer together to grip the sample tube. This creates a distance between the operator and the sample tube, preventing injury from residues in the sample tube and improving safety.

[0004] Regarding the aforementioned technology, the inventors believe it suffers from the following drawbacks: The device drives the first and second right-angled rods closer together by rotating the connecting shaft, thereby enabling the two arc-shaped gripping hands to cooperate and clamp the object. In actual use, to maintain stability, the operator needs to hold the lifting handle with one hand and rotate the connecting shaft with the other. Since the axis of the connecting shaft is directly opposite the lifting handle, the two hands are prone to interference, resulting in less smooth operation and a poor user experience. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a sample introduction device for an inductively coupled plasma mass spectrometer.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an inductively coupled plasma mass spectrometer sample introduction device, comprising a hollow protective box, a placement groove on the bottom surface of the protective box, a first clamping rod and a second clamping rod slidably disposed at both ends of the placement groove, a lifting handle on the upper surface of the protective box, a rotating groove on the inner wall of the protective box, a driving groove on the inner top wall of the lifting handle, and a driving assembly for driving the first clamping rod and the second clamping rod on the protective box.

[0007] By employing the above technical solution, when staff need to perform elemental and isotopic ratio analysis on the corrosive solution, they need to use a sample tube to hold the solution. At this point, the staff needs to hold the lifting handle and bring the first clamping rod close to the sample tube, thus positioning the sample tube between the first and second clamping rods. Next, the staff needs to press the drive rod to activate the drive assembly, causing the first and second clamping rods to engage and clamp the sample tube, ensuring its stability. This process is simple, requiring only the press of the drive rod, reducing the operational difficulty. Subsequently, the staff needs to move the sample tube to the location of the corrosive solution to hold it. Then, the staff simply needs to place the sample tube into the ion mass spectrometer for analysis.

[0008] Furthermore, the drive assembly includes a rotating rod rotatably disposed in a rotating groove, a gear fixed on the rotating rod, two racks respectively mounted on the side walls of the first clamping rod and the second clamping rod that are close to each other, a support spring with one end fixed on the side wall of the first clamping rod, and a power device disposed on the lifting handle for driving the rotating rod. The gear meshes with the two racks, and the other end of the support spring is fixed on the side wall of the second clamping rod.

[0009] Furthermore, the power unit includes a connecting rope with one end fixedly wound around the side wall of the rotating rod and a driving rod slidably disposed in the driving groove, the other end of the connecting rope being fixed to the side wall of the driving rod.

[0010] By adopting the above technical solution, when staff need to retrieve a sample tube to collect the corrosive solution, they need to hold the lifting handle and move the first and second clamping rods to the sample tube. Then, the staff needs to press the drive rod, which moves upward, causing the connecting rope to move with the drive rod. This, in turn, causes the rotating rod to rotate under the action of the connecting rope, causing the two racks to move simultaneously towards each other. This allows the first and second clamping rods to engage and clamp the sample tube, thus reducing the difficulty of operation for staff.

[0011] Furthermore, the inner wall of the rotating groove is provided with a receiving groove for accommodating the connecting rope.

[0012] By adopting the above technical solution, the probability of the connecting rope getting stuck when the rotating rod rotates is reduced, thereby improving the stability of the device.

[0013] Furthermore, a connecting rod is fixed to the side wall of the first clamping rod, and the other end of the connecting rod passes through the second clamping rod and is slidably connected.

[0014] By adopting the above technical solution, the stability of the support spring is improved, thereby reducing the probability of large-scale deformation of the support spring during the movement of the first clamping rod, thus improving the user experience for staff.

[0015] Furthermore, a return spring is fixed to the upper surface of the drive rod, and the other end of the return spring is fixed to the inner top wall of the drive groove.

[0016] By adopting the above technical solution, when the staff releases the drive rod, the drive rod quickly returns to its original position under the action of the return spring, thereby improving the pressing feel of the drive rod and thus improving the user experience of the staff.

[0017] Furthermore, the other end of the rotating rod is rotatably connected to the inner wall of the protective box.

[0018] Furthermore, silicone sheets are provided on the sidewalls of the first clamping rod and the second clamping rod that are close to each other.

[0019] In summary, this utility model has the following beneficial effects: 1. In this application, when an operator needs to perform elemental and isotopic ratio analysis on a corrosive solution, the operator needs to use a sample tube to hold the corrosive solution. At this time, the operator needs to hold the lifting handle and bring the first clamping rod close to the sample tube, so that the sample tube is ultimately positioned between the first and second clamping rods. Further, the operator needs to press the drive rod to activate the drive assembly, thereby causing the first and second clamping rods to cooperate and clamp the sample tube, thus stabilizing the sample tube. During this process, the operator only needs to press the drive rod, making the operation simple and reducing the difficulty of operation. Subsequently, the operator needs to move the sample tube to the location of the corrosive solution to hold the solution. At this point, the operator only needs to place the sample tube into the ion mass spectrometer, allowing the ion mass spectrometer to analyze the corrosive solution. 2. In this application, when the operator needs to retrieve the sample tube to collect the corrosive solution, the operator must hold the lifting handle and move the first and second clamping rods to the sample tube. Then, the operator must press the drive rod, which moves upward, causing the connecting rope to move with the drive rod. This causes the rotating rod to rotate under the action of the connecting rope, causing the two racks to move simultaneously towards each other. This allows the first and second clamping rods to cooperate and clamp the sample tube, thus reducing the operator's difficulty in operation. 3. In this application, when the operator releases the drive lever, the drive lever quickly returns to its original position under the action of the return spring, thereby improving the pressing feel of the drive lever and thus improving the operator's user experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the silicone sheet and its connection structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the power device and its connection structure according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the driving component and its connection structure according to an embodiment of the present invention.

[0021] In the diagram: 1. Protective box; 11. Reservoir slot; 2. First clamping rod; 21. Second clamping rod; 3. Lifting handle; 31. Rotating slot; 32. Drive slot; 4. Drive assembly; 41. Rotating rod; 42. Gear; 43. Rack; 44. Support spring; 5. Power unit; 51. Connecting rope; 52. Drive rod; 6. Receiving slot; 7. Connecting rod; 8. Return spring; 9. Silicone sheet. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] like Figure 1-4As shown in the illustration, this application discloses a sample introduction device for an inductively coupled plasma mass spectrometer, including a protective box 1, a first clamping rod 2, a second clamping rod 21, a lifting handle 3, a drive assembly 4, a connecting rod 7, a return spring 8, and a silicone sheet 9. A mounting groove 11 is formed on the bottom surface of the protective box 1, and the first clamping rod 2 and the second clamping rod 21 are slidably disposed at both ends of the mounting groove 11. The lifting handle 3 is disposed on the upper surface of the protective box 1 to reduce the difficulty for operators in moving the protective box 1.

[0024] Rotating grooves 31 are provided on the two opposing inner walls of the protective box 1, and a driving groove 32 is provided on the inner top wall of the lifting handle 3. The driving assembly 4 is installed on the protective box 1 and is used to drive the first clamping rod 2 and the second clamping rod 21. The driving assembly 4 includes a rotating rod 41, a gear 42, a rack 43, a support spring 44, and a power device 5. The rotating rod 41 has a round rod structure, and its two ends are rotatably arranged in the two rotating grooves 31. The gear 42 is fixed on the rotating rod 41. Two racks 43 are provided and are respectively installed on the side walls of the first clamping rod 2 and the second clamping rod 21 that are close to each other, and the gear 42 meshes with the two racks 43. One end of the support spring 44 is fixed on the side wall of the first clamping rod 2, and the other end of the support spring 44 is fixed on the side wall of the second clamping rod 21.

[0025] A power unit 5 is mounted on the lifting handle 3 and is used to drive the rotating rod 41. The power unit 5 includes a connecting rope 51 and a drive rod 52. One end of the connecting rope 51 is fixedly wound around the side wall of the rotating rod 41, and the other end of the connecting rope 51 is fixed to the side wall of the drive rod 52. The drive rod 52 has a round rod structure and is slidably disposed in the drive groove 32.

[0026] When staff need to retrieve the sample tube to collect the corrosive solution, they must grasp the lifting handle 3 and move the first clamping rod 2 and the second clamping rod 21 to the sample tube. Then, the staff must press the drive rod 52, causing it to move upwards. This moves the connecting rope 51 along with the drive rod 52, causing the rotating rod 41 to rotate under the action of the connecting rope 51. This causes the two racks 43 to move simultaneously towards each other, allowing the first clamping rod 2 and the second clamping rod 21 to engage and clamp the sample tube, thus reducing the difficulty of operation for the staff.

[0027] In order to reduce the probability of the connecting rope 51 getting stuck when the rotating rod 41 rotates, thereby improving the stability of the device, a receiving groove 6 for accommodating the connecting rope 51 is provided on the inner wall of the rotating groove 31.

[0028] The connecting rod 7 is a round rod structure. It is fixed to the side wall of the first clamping rod 2, and the other end of the connecting rod 7 passes through the second clamping rod 21 and is slidably connected. The connecting rod 7 improves the stability of the support spring 44, thereby reducing the probability of large-scale deformation of the support spring 44 during the movement of the first clamping rod 2, thus improving the user experience for the operator.

[0029] One end of the return spring 8 is fixed to the upper surface of the drive rod 52, and the other end of the return spring 8 is fixed to the inner top wall of the drive groove 32.

[0030] When the operator releases the drive lever 52, the drive lever 52 quickly returns to its original position under the action of the return spring 8, thereby improving the pressing feel of the drive lever 52 and thus improving the operator's user experience.

[0031] To improve the user experience for staff, the other end of the rotating rod 41 is rotatably connected to the inner wall of the protective box 1, and silicone sheets 9 are provided on the side walls of the first clamping rod 2 and the second clamping rod 21 that are close to each other.

[0032] The operating principle of the inductively coupled plasma mass spectrometer (ICP-MS) sample introduction device in this embodiment is as follows: When the operator needs to perform elemental and isotopic ratio analysis on the corrosive solution, the operator needs to collect the corrosive solution using a sample tube. At this time, the operator needs to hold the lifting handle 3 and bring the first clamping rod 2 close to the sample tube, so that the sample tube is finally positioned between the first clamping rod 2 and the second clamping rod 21. Further, the operator needs to press the drive rod 52 to activate the drive assembly 4, thereby cooperating the first clamping rod 2 and the second clamping rod 21 to clamp the sample tube, thus stabilizing the sample tube. During this process, the operator only needs to press the drive rod 52, making the operation simple and reducing the difficulty of operation. Subsequently, the operator needs to move the sample tube to the location of the corrosive solution to collect the corrosive solution. At this point, the operator only needs to place the sample tube into the ICP-MS to allow the ICP-MS to analyze the corrosive solution.

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A sample introduction device for an inductively coupled plasma mass spectrometer, comprising a hollow protective enclosure (1), characterized in that: The bottom surface of the protective box (1) is provided with a mounting groove (11). A first clamping rod (2) and a second clamping rod (21) are slidably arranged at both ends of the mounting groove (11). A lifting handle (3) is provided on the upper surface of the protective box (1). Rotating grooves (31) are provided on the two opposite inner walls of the protective box (1). A driving groove (32) is provided on the inner top wall of the lifting handle (3). A driving assembly (4) for driving the first clamping rod (2) and the second clamping rod (21) is provided on the protective box (1).

2. The sample introduction device for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The drive assembly (4) includes a rotating rod (41) with both ends rotatably disposed in two rotating slots (31), a gear (42) fixed on the rotating rod (41), two racks (43) respectively mounted on the side walls of the first clamping rod (2) and the second clamping rod (21) close to each other, a support spring (44) with one end fixed on the side wall of the first clamping rod (2), and a power device (5) disposed on the lifting handle (3) for driving the rotating rod (41). The gear (42) meshes with the two racks (43), and the other end of the support spring (44) is fixed on the side wall of the second clamping rod (21).

3. The sample introduction device for an inductively coupled plasma mass spectrometer according to claim 2, characterized in that: The power unit (5) includes a connecting rope (51) with one end fixedly wound around the side wall of the rotating rod (41) and a driving rod (52) slidably disposed in the driving groove (32). The other end of the connecting rope (51) is fixed to the side wall of the driving rod (52).

4. The sample introduction device for an inductively coupled plasma mass spectrometer according to claim 3, characterized in that: The inner wall of the rotating groove (31) is provided with a receiving groove (6) for accommodating the connecting rope (51).

5. The sample introduction device for an inductively coupled plasma mass spectrometer according to claim 4, characterized in that: A connecting rod (7) is fixed on the side wall of the first clamping rod (2), and the other end of the connecting rod (7) passes through the second clamping rod (21) and is slidably connected.

6. The sample introduction device for an inductively coupled plasma mass spectrometer according to claim 5, characterized in that: A return spring (8) is fixed on the upper surface of the drive rod (52), and the other end of the return spring (8) is fixed on the inner top wall of the drive groove (32).

7. The sample introduction device for an inductively coupled plasma mass spectrometer according to claim 6, characterized in that: The other end of the rotating rod (41) is rotatably connected to the inner wall of the protective box (1).

8. The sample introduction device for an inductively coupled plasma mass spectrometer according to claim 7, characterized in that: Silicone sheets (9) are provided on the side walls of the first clamping rod (2) and the second clamping rod (21) that are close to each other.

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